Mid-to-Senior Java / Software Engineer with preferably XStore/GKPOS experience

SkillNet Inc; México; On-site; MXN 875,197 - 1,225,275; Full time

Job summary

SkillNet Inc is seeking a Mid-to-Senior Java / Software Engineer in Mexico to join our retail technology team. The candidate will design, customize, and maintain our Point of Sale (POS) systems, implementing critical business logic and ensuring seamless transaction processing.

The ideal applicant will have over 4 years of Java experience, proficiency in SQL, and understanding of enterprise architectures, with extra points for familiarity with XStore/GKPOS.

Qualifications

• 4+ years of experience in Java development.
• Strong understanding of enterprise architectures.
• Proficient in SQL and database design concepts.

Responsibilities

• Design and maintain Point of Sale (POS) systems.
• Implement complex business logic for retail operations.
• Develop secure integrations between POS and enterprise systems.

Skills

Java Development

Object-Oriented Programming

SQL Proficiency

Spring Framework

Hibernate

Multithreading

Data Structures

Design Patterns

Tools

Git/SVN

Apache Ant/Maven

Oracle Database

Job description

Job Description: Mid-to-Senior Java / Software Engineer with preferably XStore/GKPOS experience

Location: Mexico (CDMX, Guadalajara, or Monterrey)

Experience Level: 4 to 8 Years

Language Requirement: English Proficiency

Employment Type: Full-Time

About SkillNet Solutions: SkillNet Solutions, Inc. is a leader in modern commerce, delivering consulting, AI solutions, and technology services to enterprises undergoing digital transformation. By implementing cloud and SaaS applications, SkillNet helps clients adapt to evolving consumer behaviors and build seamless client journeys across B2B, B2C, and B2B2C markets. Since its founding in 1996, SkillNet has partnered with industry leaders such as Oracle, Salesforce, AWS, and others to modernize operations, accelerate agility, and enhance digital and in-store experiences. With solutions delivered across 63 countries for global enterprises including Disney, lululemon athletica, and PayPal, SkillNet continues to redefine what’s possible in unified commerce and retail transformation.

Job Responsibilities

We are seeking a highly skilled Java Developer with expertise in Enterprise architectures to join our retail technology team. In this role, you will design, customize, extend, and maintain our Point of Sale (POS) systems. You will bridge the gap between core Java backend development and retail functional workflows, ensuring seamless transaction processing, omnichannel integrations, and system reliability across our global store footprint.

Key Responsibilities

• Customization & Extension: Design and develop extensions, configurations, and overrides within the any framework using Java (J2SE/J2EE).
• Feature Implementation: Implement complex business logic for retail operations, including cash management, tax scenarios, promotions, returns, complex tender handling, and customer loyalty flows.
• Integration Development: Develop and maintain secure integrations between POS and backend enterprise systems (e.g., Oracle Retail Merchandising System (RMS), ERP, CRM, and third-party payment gateways).
• Database Management: Write and optimize complex SQL queries, manage relational databases (Oracle DB/SQL Developer), and perform data mapping for Xcenter and Office configurations.
• Troubleshooting & Log Analysis: Analyze POS behavior, review transaction logs, and perform root-cause analysis on critical production defects to support QA and deployment teams.
• Technical Documentation: Author High-Level and Detailed Design Documents (HDD/DDD) based on Business and Functional Requirement Documents (BRD/FRD).
• Language Skills : English speaking skills are required.

Technical Requirements & Qualifications

Core Technical Skills

• Java Development: 4+ years of solid experience in Java development (Object-Oriented Programming, Multithreading, Data Structures, and Design Patterns).
• Architecture & Configuration: Strong understanding business logic overrides, receipt frameworks, screen/UI alterations, and workflow management.
• Databases: Proficient in SQL and database design concepts (Oracle Database preferred).
• Tools & Frameworks: Experience with Spring, Hibernate, XML, JSON, Apache Ant/Maven, and version control tools (Git/SVN).

Preferred (Nice-to-Have)

• Experience with XStore/GK POS or alternative modern retail POS platforms.
• Knowledge of microservices architecture, RESTful/SOAP APIs, and cloud integrations (AWS/Azure).
• Familiarity with Agile/Scrum methodologies and tools like Jira and Confluence.